Display device and method for manufacturing the same

Abstract

A display device includes a folding area foldable about a folding axis and a non-folding area proximate to the folding area. The display device includes a display module that displays an image and a glass window that is disposed over the display module that includes a patterned glass. The patterned glass includes a pattern portion including a groove pattern provided on one surface of the patterned glass to correspond to the folding area and a non-pattern portion disposed adjacent to the pattern portion to correspond to the folding area. The pattern portion has a thickness that is smaller than or equal to one-half a thickness of the non-pattern portion.

What is claimed is: 
     
         1 . A method for manufacturing a display device including a folding area foldable about a virtual folding axis and a non-folding area proximate to the folding area, the method comprising:
 forming a display panel;   forming a glass window; and   combining the display panel and the glass window to each other,   wherein forming of the glass window includes:   forming laser patterns to one surface of a base glass corresponding to the folding area by applying an ultrashort pulse laser thereto; and   forming a patterned glass including a pattern portion having a groove pattern and a non-pattern portion proximate to the pattern portion by etching the base glass having the laser patterns formed therein, wherein the pattern portion has a thickness that is smaller than or equal to one-half a thickness of the non-pattern portion.   
     
     
         2 . The method of  claim 1 , wherein the ultrashort pulse laser is a picosecond laser or a femtosecond laser. 
     
     
         3 . The method of  claim 1 , wherein the groove pattern has a shape recessed from the one surface of the base glass, and
 wherein the groove pattern has a stripe shape extending in a first direction parallel to the folding axis.   
     
     
         4 . The method of  claim 3 , wherein the laser patterns are spaced apart from each other in the first direction. 
     
     
         5 . The method of  claim 1 , wherein the pattern portion includes a plurality of pattern portions, and
 wherein the pattern portions of the plurality of pattern portions are spaced apart from each other in a second direction perpendicular to a first direction and parallel to the folding axis.   
     
     
         6 . The method of  claim 5 , wherein the patterned glass further includes an outermost pattern portion, of the plurality of pattern portions, farthest from the folding axis in the second direction,
 wherein the outermost pattern portion includes an outermost bottom surface, a first outermost inside surface, and a second outermost inside surface configured to define an outermost groove pattern, and   wherein the first outermost inside surface and the second outermost inside surface have different inclination angles with respect to the outermost bottom surface.   
     
     
         7 . The method of  claim 6 , wherein the forming of the glass window further includes:
 forming sub-laser patterns in proximity to a first laser pattern for formation of the outermost groove pattern, and   wherein depths of the sub-laser patterns decrease farther away from the folding axis.   
     
     
         8 . The method of  claim 6 , wherein a distance between the folding axis and the first outermost inside surface is greater than a distance between the folding axis and the second outermost inside surface, and
 wherein the first outermost inside surface has a smaller inclination angle than the second outermost inside surface.   
     
     
         9 . The method of  claim 1 , wherein the forming of the glass window further includes:
 forming a filling layer on one surface of the patterned glass on which the groove pattern is provided.